PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4521BSpring,helical,compression

Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions · NSN 5360-00-300-4094 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-300-4094 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-300-4094. Primary manufacturer part number: 4521B.
Features
  • Spring,helical,compression — FSC 5360
  • 3 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-300-4094, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-300-4094
Primary Part Number4521B
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5940-00-082-4869 INTERCHANGEABLE
Terminal,stud
Cross-Reference Index
Part NumberManufacturer
4521B PRIMARY Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
4521B Siemens Energy, Inc. Dba Dresser-Rand (USA)
4521B Dresser-Rand Co Worthington Compressor Opn a Joint Venture (USA)
Related Parts
5940-00-082-4869INTERCHANGEABLE
TERMINAL,STUD

Frequently Asked Questions

What is NSN 5360-00-300-4094?

NSN 5360-00-300-4094 is a Spring,helical,compression, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-300-4094?

NSN 5360-00-300-4094 has 3 cross-referenced part numbers: 4521B (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 4521B (Siemens Energy, Inc. Dba Dresser-Rand), 4521B (Dresser-Rand Co Worthington Compressor Opn a Joint Venture).

What NSN replaces 5360-00-300-4094?

There is 1 known substitute for 5360-00-300-4094: 5940-00-082-4869. Verify interchangeability with system specifications before substitution.

What are the specifications of 4521B?

Key specifications for 4521B: Special Features: MATL HARDNESS RATING-NO RATING. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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